Silica Submission 1527

Job Description
Area Sample at bottom of excavation 18-50 feet from grinding activity.
Type of Work
Grinding
Control Methods
General Mechanical
Sampling Type
Area Sample (21'- 25')
Environment
Enclosed 1 Side (limited flow)
Lab Report ID
L426166-3
Total Sample Time
245minutes
Sampling Results RCS
64
Time Weighted Average
33.00
Base Material
Concrete
Submission ID Only
1527
Matching Base Material
Concrete
Matching Type of Work
Grinding